WAH is a biological insecticide contains spores of Beauveria bassiana, strain WH 104 a naturally occurring entomopathogenic fungus that uses the insect body as host & infects. Spores starts multiplying as it comn es in contact with the cuticle (skin) of the host insect. It germinates and grows directly through the cuticle to the inner body of the host and proliferates in such a ways throughout the insect’s body.